com.ibm.crypto.hdwrCCA.provider

Class ECKeyPairGenerator

java.lang.Object

java.security.KeyPairGeneratorSpi

com.ibm.crypto.hdwrCCA.provider.ECKeyPairGenerator

public final class ECKeyPairGenerator
extends java.security.KeyPairGeneratorSpi

This class generates EC public and private key pairs. An application can specify the key size, key label, storage type and usage type of the key pair to be generated via an instance of the AlgorithmParameterSpec class. The default key has a size of 256, stored in the CLEAR, and with key management functionalities if key management is supported by Elliptic Curve keys. If key management is not supported, then the default usage will be signature.

Constructor Summary

Constructors

Constructor and Description
ECKeyPairGenerator()

Method Summary

Modifier and Type	Method and Description
java.security.KeyPair	generateKeyPair() Generates an Elliptic Curve key pair.
void	initialize(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes the key pair generator using the specified parameter set and user-provided source of randomness.
void	initialize(int keysize, java.security.SecureRandom random) Initializes the key pair generator for a certain key size, using the default parameter set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ECKeyPairGenerator

public ECKeyPairGenerator()

Method Detail

initialize

public void initialize(java.security.spec.AlgorithmParameterSpec params,
                       java.security.SecureRandom random)
                throws java.security.InvalidAlgorithmParameterException

Initializes the key pair generator using the specified parameter set and user-provided source of randomness.

Overrides:

initialize in class java.security.KeyPairGeneratorSpi

Parameters:

params - the parameter set used to generate the keys

random - the source of randomness for this generator

Throws:

java.security.InvalidAlgorithmParameterException - if the given parameters are inappropriate for this key pair generator

initialize

public void initialize(int keysize,
                       java.security.SecureRandom random)
                throws java.security.InvalidParameterException

Initializes the key pair generator for a certain key size, using the default parameter set. The generated keys will be stored in the CLEAR.

Specified by:

initialize in class java.security.KeyPairGeneratorSpi

Parameters:

keysize - the key size of the key to be generated

random - the source of randomness for this generator

Throws:

java.security.InvalidParameterException - when a parameter is not recognized

generateKeyPair

public java.security.KeyPair generateKeyPair()

Generates an Elliptic Curve key pair. The public key will be usable outside this provider. However, the private key will be stored either in a hardware associated file (PKDS) or as a clear token representation (CLEAR), and is therefore only usable by this provider on the machine that generated the key pair.

Specified by:

generateKeyPair in class java.security.KeyPairGeneratorSpi

Returns:

the newly generated Elliptic Curve key pair